Optical properties of Nd(DBM)3Phen in MMA and PMMA

Chen, Biao; Dong, Ning; Zhang, Qijin; Yin, Min; Xu, Jie; Liang, H.; Zhao, Hui

doi:10.1016/j.jnoncrysol.2004.04.023

Cited by 23 publications

(8 citation statements)

References 33 publications

(81 reference statements)

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“…Sometimes the guest molecules cannot be well‐dispersed in the polymeric matrix due to the aggregation effects. It has been reported that poly(methyl methacrylate) (PMMA) is a good host matrix, in that; it is able to ensure better distribution of guest molecules through supra‐molecular interactions between the guest and the host system [11–13]. The molecular structure of the chelate as well as the interactions between the guest molecules and the host system are important parameters that determine many of the final properties of the material.…”

Section: Introductionmentioning

confidence: 99%

Specializations of intercellular junctions are associated with the presence and absence of hair cell regeneration in ears from six vertebrate classes

Burns

Collado

Oliver

et al. 2013

J of Comparative Neurology

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Sensory hair cell losses lead to hearing and balance deficits that are permanent for mammals, but temporary for nonmammals because supporting cells in their ears give rise to replacement hair cells. In mice and humans, vestibular supporting cells grow exceptionally large circumferential F-actin belts and their junctions express E-cadherin in patterns that strongly correlate with postnatal declines in regeneration capacity. In contrast, chicken supporting cells retain thin F-actin belts throughout life and express little E-cadherin. To determine whether the junctions in chicken ears might be representative of other ears that also regenerate hair cells, we investigated inner ears from dogfish sharks, zebrafish, bullfrogs, Xenopus, turtles, and the lizard, Anolis. As in chickens, the supporting cells in adult zebrafish, Xenopus, and turtle ears retained thin circumferential F-actin belts and expressed little E-cadherin. Supporting cells in adult sharks and bullfrogs also retained thin belts, but were not tested for E-cadherin. Supporting cells in adult Anolis exhibited wide, but porous webs of F-actin and strong E-cadherin expression. Anolis supporting cells also showed some cell cycle reentry when cultured. The results reveal that the association between thin F-actin belts and low E-cadherin is shared by supporting cells in anamniotes, turtles, and birds, which all can regenerate hair cells. Divergent junctional specializations in supporting cells appear to have arisen independently in Anolis and mammals. The presence of webs of F-actin at the junctions in Anolis appears compatible with supporting cell proliferation, but the solid reinforcement of the F-actin belts in mammals is associated with its absence.

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Section: Introductionmentioning

confidence: 99%

Specializations of intercellular junctions are associated with the presence and absence of hair cell regeneration in ears from six vertebrate classes

Burns

Collado

Oliver

et al. 2013

J of Comparative Neurology

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“…19 Several other authors have investigated the spectroscopic and photophysical properties of lanthanide(III) complexes in PMMA. [20][21][22][23][24][25] A disadvantage of PMMA films or sheets is their brittleness, due to the high glass transition temperature of this polymer (around 100 1C). Flexible polymer films can be obtained by blending the polymer with a plasticizer.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Lunstroot

Driesen

Nockemann

et al. 2010

Phys. Chem. Chem. Phys.

148

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Flexible luminescent polymer films were obtained by doping europium(III) complexes in blends of poly(methyl methacrylate) (PMMA) and the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C 6 3 ], where nta is 2-naphthoyltrifluoroacetonate, tta is 2-thenoyltrifluoroacetonate, phen is 1,10-phenanthroline, dpa is 2,6-pyridinedicarboxylate (dipicolinate) and choline is the 2-hydroxyethyltrimethyl ammonium cation. Bright red photoluminescence was observed for all the films upon irradiation with ultraviolet radiation. The luminescent films have been investigated by high-resolution steady-state luminescence spectroscopy and by time-resolved measurements. The polymer films doped with b-diketonate complexes are characterized by a very intense 5 D 0 -7 F 2 transition (up to 15 times more intense than the 5 D 0 -7 F 1 ) transition, whereas a marked feature of the PMMA films doped with [choline] 3 [Eu(dpa) 3 ] is the long lifetime of the 5 D 0 excited state (1.8 ms).

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“…In this case, the r of the 4 F 3/2 ? 4 I 11/2 fluorescence transition of the Nd(III) ions is 1.92 9 10 -20 cm 2 , which is higher than some previous works which are listed in Table 3 [29,30]. This complex will be a promising material for liquid laser application.…”

Section: Resultsmentioning

confidence: 70%

Synthesis, crystal structure, and optical properties of a novel rare-earth complex Nd(C2F5COO)3 · Phen

She

Gao²,

Cui³

et al. 2008

Struct Chem

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A novel neodymium pentafluoropropionate binuclear complex, Nd(C 2 F 5 COO) 3 Á Phen (Phen: 1,10-phenanthroline), was synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR spectra, UV-Vis-NIR absorption, and PL spectra. Singlecrystal data show that the complex bears centrosymmetric dinuclear structure with a planar ligand configuration. Four carboxylato groups act as g 2 -chelate-l 2 -carboxylato-k 1 O: k 1 O 0 -bridge-ligands, the other two occupy the terminal position as monodentate ligands. At the same time, the C-O distances appear averaged which indicate the three atoms of carboxylato forming electron-conjugate system. Hydrogen bond and p-p-stacking link the binuclear to two-dimensional sheet. Optical spectra exhibit the complex possesses typical Nd(III) ion absorption and photoluminescence emission.

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Optical properties of Nd(DBM)3Phen in MMA and PMMA

Cited by 23 publications

References 33 publications

Specializations of intercellular junctions are associated with the presence and absence of hair cell regeneration in ears from six vertebrate classes

Specializations of intercellular junctions are associated with the presence and absence of hair cell regeneration in ears from six vertebrate classes

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Synthesis, crystal structure, and optical properties of a novel rare-earth complex Nd(C2F5COO)3 · Phen

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